Cocos Creator（一）物体的移动和跳跃

cc.Class({
    extends: cc.Component,

    properties: {
        jumpHeight: 200,
        jumpDuration: 0.35,
        xSpeed : 350,
    },
    
    onLoad () {
		// 初始化键盘输入监听
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
   },

  start () {
  },

  update: function (dt) {
        //根据当前速度方向每帧更新速度
        if (this.accLeft) {
            this.node.x -= this.xSpeed * dt;
        } else if (this.accRight) {
            this.node.x += this.xSpeed * dt;
        }

    },

	  onDestroy () {
        // 取消键盘输入监听
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
    },

	//跳跃功能，在跳跃期间暂停跳跃功能
    jumpAction (){
      var jumpUp = cc.moveBy(this.jumpDuration, cc.v2(0,this.jumpHeight)).easing(cc.easeCubicActionOut())
      var jumpDown = cc.moveBy(this.jumpDuration, cc.v2(0, -this.jumpHeight)).easing(cc.easeCubicActionIn());
      var setJump=cc.callFunc(function(){this.isJump=false},this,this);
      return cc.sequence(jumpUp,jumpDown,setJump);
    },

    onKeyDown (event) {
        switch(event.keyCode) {
            case cc.macro.KEY.a:
            console.log(this.node.x)
                this.accLeft = true;
                break;
            case cc.macro.KEY.d:
                this.accRight = true;
                break;
            case cc.macro.KEY.w:
              if(!this.isJump){
                this.isJump = true;
                this.node.runAction(this.jumpAction());
              }
              break;
        }
    },

	onKeyUp (event) {
        switch(event.keyCode) {
            case cc.macro.KEY.a:
                this.accLeft = false;
                break;
            case cc.macro.KEY.d:
                this.accRight = false;
                break;
        }
    },
});